A man in Colorado says that he became a musical savant after a swimming pool injury. He claims that he sustained a concussion after hitting his head diving into a swimming pool, then shortly after he was able to compose and play the piano.
Is it possible? I don’t know, but I have seen (very recently) a high school student become smarter after a concussion. His grades improved and he reported that school was easier. Add to that his ImPACT test was off the charts after his concussion, as compared to his pretest.
The musical savant recently went to the Mayo Clinic and had his brain analyzed. He is the first to have this condition documented from a concussion.
The Concussion Blog 